Question

es - 10 9²62 - 6c²d2-15 from 8 a ² b ² +4 c²d2-15 class 7th​

Answer 1

Answer:

Step-by-step explanation:

If a^2+b^2+c^2-ab-bc-ca=0 then prove that a=b=c. a² + b² + c² = ab + bc + ca. On multiplying both sides by “2”, it becomes.